Error during template rendering

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cixtus anyanwu

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May 23, 2019, 2:06:31 PM5/23/19
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Guys am following the django girls pdf tutoril but am stuck here. Its saying:

django.urls.exceptions.NoReverseMatch: Reverse for 'post_details' with keyword arguments '{'pk': 3}' not found. 1 pattern(s) tried: ['posts/<int:\\ pk>/$']
[23/May/2019 18:13:22] "GET / HTTP/1.1" 500 153773 
my views.py is below:

from django.shortcuts import render, get_object_or_404
from django.utils import timezone
from .models import Post


# Create your views here.
def post_list(request):
 posts = Post.objects.filter(title__contains='post')
 return render(request, 'blog/post_list.html', {'posts':posts})
def post_details(request, pk):
 posts = get_object_or_404(Post, pk)
 return render(request, 'blog/post_details.html', {'posts': posts})


urls.py

from django.urls import path
from . import views


urlpatterns = [
 path('', views.post_list, name='post_list'),
 path('posts/<int: pk>/', views.post_details, name='post_details')
]


base.html

{% load static %}
<!DOCTYPE html>
<head>
 <title>Django reloaded</title>
 <link rel="stylesheet" type="text/css" href="{% static 'css/blog.css' %}">
</head>
<body>
 <h1>Django Girls Blog </h1>
 {% block content %}
 {% endblock %}
</body>
</html>


post_details.html

{% extends 'blog/base.html' %}
{% block content %}
 {% if post.published_date %}
 <h1>{{post.title}}</h1>
 {% endif %}
 <div>
 <p>{{post.body}}</p>
 <p><b>{{post.published_date}}</b></p>
 </div>
 }
{% endblock %}


I have tried everything i can. Pls help me out guys.

Rock N Roll Mühlbacher

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May 23, 2019, 2:11:20 PM5/23/19
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Jim Illback

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May 23, 2019, 2:29:57 PM5/23/19
to Django users
Below, post is a DB row, not an ID as the URL.py requires. 

Change the view as:
return render(request, ‘blog/post_details.html’, {‘pk’: posts[‘id’]})


Jim


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cixtus anyanwu

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May 23, 2019, 3:23:09 PM5/23/19
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Still got this erorr. thanks
  File "C:\Users\ANYANWU\djangogirls\myvenv\lib\site-packages\django\urls\resolvers.py", line 634, in _reverse_with_prefix
    raise NoReverseMatch(msg)
django.urls.exceptions.NoReverseMatch: Reverse for 'post_details' with keyword arguments '{'pk': 3}' not found. 1 pattern(s) tried: ['posts/<int:\\ pk>/$']

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Jim Illback

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May 23, 2019, 5:45:20 PM5/23/19
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This error comes when there is a {% url %} tag that is not set up properly - like the views.py line highlighted below. So, I suspect you have such a tag say tied to a button on the html page, but it isn’t included in this thread.

There’s another error in the code not related to your reverse error - the view passes in ‘posts’ as the context name but the template processes ‘post’: post.title, post.xxxx, etc. Those have to match in order for the DB values to be displayed.

I’d go back through the djangogirls tutorial again and be positive everything is typed in correctly. That should fix it.

Jim

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